Solve the problem of weak yarn twist

Analysis of causes and measures for weakly twisted yarns in pure cotton varieties

Controlling and reducing regular and occasional yarn defects is a concrete manifestation of improving yarn quality, spinning process technology and management level The level of yarn defects determines the level of product quality. Through the analysis and control of yarn defects in C19.5tex weakly twisted yarn, the measures taken from the aspects of equipment maintenance, special equipment, process technology, and operation are introduced in detail.

The key parts that affect the yarn quality of the spinning frame are the drafting and head transmission parts that produce uneven evenness, and the second part that produces uneven twist and strength, affecting hairiness, neps and broken ends. around the part. For weakly twisted yarns, there are major problems in winding components such as spindles, spindle belts, spindle belt reels, and yarn tubes, such as spindle shaking, sinking, wear, spindle belt deviation, twisting, deviation, curling, etc. The main influencing factors include the tension failure of the spindle reel, inconsistent pressure scale, cleaning of the reel, no eye of the yarn tube, and high leg operation.

The key points of equipment control are (1) ensuring that the spindle is not short of oil, ensuring that the refueling is not full, and that there is no black oil after each spindle is refueled; (2) there is no spindle hook failure, and the spindle is wiped flat after the spindle is refueled The flying particles on the wheel and spindle hook must be cleaned up; (3) Spindle There is no deviation or twisting of the belt, the entry and exit position of the spindle belt meets the process requirements, and the spindle belt does not touch the rim and the upper and lower edges of the spindle wheel; (4) The weight pressure scale of the spindle belt reel is consistent, and the tension of the spindle belt is not allowed to fail. , Strictly clean the tape reel to prevent tape reels that are short of oil and have worn bearings from being used on the vehicle.

In terms of operation, the ingot belt must be repaired to ensure that it meets the process standards and the tension must be restored in a timely manner. Doffing workWhen cleaning the spindle hook or doffing, be sure to check back to prevent deviation.